Beskrivelse av alle kolonner på Detaljer- og Tidevannssidene, med merknader om hvordan verdiene relaterer seg til virkelige forhold.

Details Page — Forecast Table

Columns are grouped by API source. Ocean columns (wave, current, sea temp, tide) are only shown for coastal locations where the nearest Barentswatch grid point is within 1 km.

MET Norway Locationforecast

Column	Unit	Description
Wind	m/s	Sustained 10-minute mean wind speed (bold) followed by gust speed in parentheses. Gust is the expected strongest 3-second wind speed within the hour.
Wind dir	wind barb	Meteorological wind barb — shows both direction and strength in a single symbol. The shaft points toward where the wind is heading; barbs at the tail encode speed: half barb = 5 kn, full barb = 10 kn, pennant = 50 kn. Calm winds show an open circle. Hover/aria label shows direction and Beaufort force.
Weather	emoji	Weather symbol summarising precipitation type, cloud cover, and sky conditions for the next 1-hour period.
Rain / Snow	mm	Expected precipitation in the next hour. Column header switches between "Rain" and "Snow" based on the air temperature. Zero precipitation is hidden.
Temp	°C	Air temperature at 2 m above ground.
Pressure	hPa	Air pressure at sea level. Used in the fishing score — moderate low pressure (1010–1020 hPa) is ideal for fish activity.

Source: MET Norway Locationforecast 2.0 — ~2.5 km grid (HARMONIE-AROME model). Hourly data for the first ~48 hours; 6-hour intervals beyond that (NoFish trims at the last hourly row).

Barentswatch Waveforecast

Column	Unit	Description
Height	m	Significant wave height (Hs) — the average height of the highest one-third of waves. Roughly 1 in 10 waves will be ~1.3× Hs, and maximum wave height can reach ~1.9× Hs. Bold values are real data points; grey italic values are linearly interpolated.
Dir	arrow	Mean direction the waves are travelling from. The arrow points in the direction the waves are heading.
Period	s	Peak wave period — time between dominant wave crests. Longer periods (≥ 10 s) = comfortable swell; short periods (< 5 s) = steep, dangerous chop. Interpolated like wave height.

Source: Barentswatch Waveforecast — ~4 km grid. Data arrives at 3-hour intervals; NoFish interpolates linearly to fill every hourly row.

Barentswatch Sea Current

Column	Unit	Description
Current	m/s	Surface ocean current speed. Above ~0.5 m/s indicates strong current. 0.25–0.55 m/s is considered ideal for deep-water fishing.
Dir	arrow	Direction the current is flowing towards. The arrow points where the water is moving.

Source: Barentswatch Sea Current — ~800 m grid; hourly. Accuracy is moderate — currents are highly sensitive to local bathymetry and wind.

MET Sea Temp

Column	Unit	Description
Temp	°C	Sea surface temperature from MET Norway's NorKyst800 ocean model.

Source: MET Norway Oceanforecast 2.0 — ~800 m grid (NorKyst800), Norwegian coastal waters.

Kartverket

Column	Description
Tide	Tidal phase label relative to the nearest high/low event, e.g. "Hi (13:18)" at the peak, "Hi+1" one hour after high tide, "Falling" during ebb, "Lo-2" two hours before low tide.

Source: Kartverket Tide API — based on the nearest tide gauge station.

Calculated columns

Column	Description
Sun	Sun phase: Daylight, Civil twilight, Nautical twilight, or Night. Transition times shown in parentheses. Time column background colour reflects the sun phase.
Moon	Current moon phase with emoji: 🌑 New Moon, 🌒 Waxing Crescent, 🌓 First Quarter, 🌔 Waxing Gibbous, 🌕 Full Moon, 🌖 Waning Gibbous, 🌗 Last Quarter, 🌘 Waning Crescent.

Sun position is calculated from latitude, longitude, and UTC time. Moon phase is an astronomical calculation based on the Julian date.

Confidence indicators

The Details page shows a confidence legend above the table:

High — first ~24 hours; NWP model skill is strong
Medium — hours 24–48; still useful but less precise
Low — beyond 48 hours (not shown — table is trimmed at MET's last 1-hour interval)

Interpolated wave values (grey italic) inherently have lower confidence than real 3-hour data points.

Tide Page

Column	Unit	Description
Time	date + time	Predicted time of the high or low tide event, displayed in the local timezone.
Level	cm	Water level relative to chart datum (CD) — the lowest astronomical tide level. Highest high and lowest low in the period are shown in bold.
Type	—	Either High or Low.

Source: Kartverket – Se havnivå — tide gauge station network. Data is interpolated to the requested position; station name and distance shown in the page header.

What affects the tide?

Spring tides (largest range) occur around new moon and full moon.
Neap tides (smallest range) occur around first and last quarter.
Local geography strongly amplifies or dampens tidal range. A fjord opening can funnel tidal flow.

Important: Kartverket's values are astronomical predictions only. They do not include storm surge. During strong onshore winds or deep low-pressure systems, actual water levels can be 30–100 cm higher than predicted. Always factor in current weather conditions.

Data Quality and Sources

Source ratings

Source	Data	Quality	Grid	Next-hour	Next-week
MET Locationforecast	Wind, temp, precipitation, pressure	⭐⭐⭐⭐⭐	~2.5 km	Excellent	Good 1–3 days
MET Oceanforecast	Sea surface temperature	⭐⭐⭐⭐	~800 m	Good	1–2 days
Barentswatch Waves	Wave height, direction, period	⭐⭐⭐⭐	~4 km	Good	1–2 days
Barentswatch Current	Current speed, direction	⭐⭐⭐	~800 m	Moderate	Limited 1–2 days
Kartverket Tides	Tide event times & heights	⭐⭐⭐⭐⭐	Station network	Excellent	Excellent (deterministic)
Nominatim / OSM	Place name from coordinates	⭐⭐⭐⭐	N/A	N/A	N/A

Key limitations

Ocean data is coastal only.

Barentswatch models cover Norwegian coastal waters. Ocean data is suppressed when the nearest grid point is more than 1 km from the clicked location — this catches both inland points and edge-of-model locations.

Wave data is interpolated.

Barentswatch provides wave data at 3-hour intervals. NoFish linearly interpolates to fill every hourly row. Interpolated values are displayed in grey italic. Between data points the interpolation cannot capture sudden changes.

Tides are astronomical predictions only.

Storm surge is not included. During strong onshore winds or low-pressure systems, actual water levels can differ significantly from the prediction.

Current speed is forecast only — not observation.

The current speed and direction shown on NoFish come from a numerical ocean model, not from real-time measurements. Ocean currents are extremely sensitive to local bathymetry, wind conditions, and tidal interactions. The forecast gives a useful indication of general current patterns, but cannot be trusted as precise values for a specific spot. Always rely on local knowledge and on-the-water observation for current conditions.

Weather accuracy beyond day 3–4.

All NWP models lose skill rapidly beyond 3–4 days. The table is trimmed at ~48 hours to stay within the reliable window.

Forecast grid points vs. clicked point.

Both MET and Barentswatch APIs snap coordinates to their nearest grid point. The Details page shows the distance. If the grid point is more than 1 km away, ocean data is dropped entirely.

Not a substitute for judgment.

NoFish is not powered by AI and does not make recommendations. Every skipper on the Norwegian coast must use their own experience, local knowledge, and real intelligence before heading out. The numbers here inform that decision — they do not replace it.

See Fishing Score Algorithm for how these values feed into the fishing score.

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